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Effect of sanitizer combined with steam heating on the inactivation of foodborne pathogens in a biofilm on stainless steel

机译：消毒剂结合蒸汽加热对不锈钢生物膜中食源性病原体失活的影响

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摘要

The combined effect of chemical sanitizers including sodium hypochlorite, hydrogen peroxide, iodophor, and benzalkonium chloride with steam heating on the inactivation of biofilms formed by Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes on stainless steel was investigated. Six day old biofilms, comprised of a mixture of three strains each of three foodborne pathogens, were produced on stainless steel coupons at 25 ℃ and treated with each sanitizer alone (for 5, 15, and 30 s), steam alone (for 5, 10, and 20 s), and the combination. There was a synergistic effect of sanitizer and steam on the viability of biofilm cells of the three pathogens as evidenced by plating counts and imaging. The combination treatment achieved an additional 0.01 to 2.78 log reduction compared to the sum of each individual treatment. The most effective combination for reducing levels of biofilm cells was the combination of steam and iodophor; steam for 20 s and merely 20 ppm iodophor for 30 s reduced cell numbers to below the detection limit (＜1.48 log CFU/coupon). These results suggest that the combination treatment of sanitizer with steam can be applied to control foodborne pathogens biofilm cells in food processing facilities as a potential intervention.
机译：研究了化学消毒剂（包括次氯酸钠，过氧化氢，碘伏和苯扎氯铵）与蒸汽加热对不锈钢上的大肠杆菌O157：H7，鼠伤寒沙门氏菌和单核细胞增生性李斯特菌形成的生物膜失活的综合作用。在25℃的不锈钢试片上制作了六天大的生物膜，该膜由三种菌株和三种食源性病原体的混合物组成，并分别用每种消毒剂处理（5、15和30 s），单独用蒸汽处理（5， 10和20 s），以及组合。平板计数和成像表明，消毒剂和蒸汽对三种病原体生物膜细胞的活力具有协同作用。与每个单独处理的总和相比，组合处理的对数减少了0.01到2.78。降低生物膜细胞水平最有效的组合是蒸汽和碘伏的组合。蒸汽20秒钟，碘伏仅20 ppm，持续30秒钟，细胞数减少到检测限以下（＜1.48 log CFU /优惠券）。这些结果表明，消毒剂与蒸汽的组合处理可作为控制食品加工设施中食源性病原体生物膜细胞的一种潜在手段。

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  • 来源
    《Food microbiology》 |2016年第5期|47-54|共8页
  • 作者

    Ga-Hee Ban; Dong-Hyun Kang;

  • 作者单位

    Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea;

    Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea,Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biofilm; Steam; Sodium hypochlorite; Hydrogen peroxide; Iodophor; Benzalkonium chloride;

    机译：生物膜蒸汽;次氯酸钠;过氧化氢碘伏;苯扎氯铵;

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